On an antique shotgun I was told had Korean origin I found the following (what I presume are Hanja?) characters. Four out of five I believe I have correctly identified. One character I could not find in the dictionary.
However, my only resources are Chinese and I know almost nothing about Chinese characters' usage in Korea†.
[UNKNOWN CHARACTER] 製 特
The unknown character is three stacked components in this basic form
Though, the bottom component might well be
中, there is quite a bit of tarnish obscuring it.
On Side A, the two characters that follow the unknown one seem to indicate "special manufacture".
One Side B, I get the translation "hang" or "twist" for character one, and "tube" for character two. To me, this might indicate the process of rifling, but I could not find any use of these characters on the Chinese character entry for rifling, and the barrel is old and I couldn't tell conclusively if it'd ever undergone that process.
Can someone help me translate these characters?*
† I'm also not certain the Korean origin of this piece, but that is what I was told.
* Please let me know if this might be a better fit for the Chinese language stack. I ask here with the idea that Korean usage of these characters might be idiomatic and more suitable for this sub. Thanks.
I was able to take some acceptable close up imagery: